Builder&#39;s crane.



G. H. STRESBNREUTER. BUILDER'S CRANE. APPLICATION FILED MAR. 7, 1910.

Patented Feb. 7, 1911.

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c. H. STRESENREUTER.

BUILDER'S CRANE. APPLICATION FILED MAR. 7, 1910.

983,578. Patented Feb. 7,1911.

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BUILDERS CRANE. APPLIUATION IIL'ED MAR. 7, 1910.

983,578, 7 v Patented Feb. 7, 1911.

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CHARLES H. STRESENREUTER, OF CHICAGO, ILLINOIS.

BUILDERS CRANE.

T 0 all whom it may concern:

Be it known that I, CHARLES H. STREsEN- REUTER, a citizen of the UnitedStates, and a resident of the city of Chicago, in the county of Cook andState of Illinois, have invented certain new and useful Improvements inBuilders Cranes; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings, and to the numbers of reference marked thereon,which form a part of this specification.

Cranes and hoists of many difierent kinds have been heretoforeconstructed and have gone into more or less extensive use for manydifferent purposes. In certain building operations, however, none of thecranes or hoists heretofore devised have proven entirely satisfactoryeither because inconvenient to handle to permit the same to be quicklymoved from place to place on the job or because, although capable of usein one part of the structure, in others they are incapable of use. Oneof the operations sometimes requiring a hoist or crane of considerablepower and capable of being quickly moved from point to point on the jobis the placing of the massive beams and girders employed in buildingframe or other structures requiring their use and in consequence muchvexatious delay is occasioned and unnecessary expense. In some portionsof the work it has proven exceedingly diflicult to satisfactorily useany of the heretofore existing cranes without great loss of time and insome instances, considerable danger.

The object of this invention is to provide a hoist or crane adapted foruse in liandling heavy bodies of any kind and adapted particularly foruse in placing beams or girders.

It is also an object of the invention to afford a device of the classdescribedmovably freely upon the completed or partly completed floor toelevate and place beams and girders or other heavy objects for the nextsucceeding story.

It is also an object of the invention to afford in connection with adevice of the class described a laterally projecting crane arm by theuse of which the beams or girders at the ends or sides of the buildingmay be placed as conveniently and readily as those intermediate thesides or ends.

It is further an object of this invention to provide a crane in whichthe uprights are Specification of Letters Patent.

Application filed March 7, 1910.

Patented Feb. 7, 1911.

Serial No. 547,685.

In the drawings: Figure 1 is a side elevation of a device embodying myinvention. Fig. 2 is an enlarged fragmentary top plan View thereof. Fig.8 is an end elevation. Fig. 4 is an enlarged detail view of'the winchembodied in my invention. Fig. 5 is a section on line 55 of Fig. 4. Fig.6 is a fragmentary view illustrating a construction in which the cranebeam is adjustable as to height. Fig. 7 is an enlarged fragmentarydetail of the lower end of one of the adjustable uprights. Fig 8 is asimilar view taken at right angles with Fig. 7. Fig. 9 is a sectiontaken on line 99 of Fig. 8. Fig. 10 is an enlarged section taken on line1010 of Fig 6, with parts omitted.

As shown in the drawings: Four uprights 1 and 2, are arranged in pairsto afford opposite ends of the machine, and each, as shown, comprises anangle bar or other structural steel form of suitable length and crosssection to afi'ord the requisite strength and connected together inpairs by means of transverse bars 3, 1, 5, 6, and 7, and braced near thetop, as shown, by means of diagonal members 8 and 9. Each pair of legsthus formed afliording the ends of the machine, are supported upon asill 10, provided with trucks 11, which permit the machine to be readilymoved as upon a floor. The upper ends of said legs are bent at an anglecorresponding with the inclination of said ends so that the upper endsof each bar are substantially vertical and parallel and are rigidlyengaged together by means of an I beam 12, rigidly secured between eachpair of legs at the top and extending, as shown, rearwardly beyond thelegs afforded by the angle bars 2.

The frame construction shown in Figs. 6 to 10 inclusive is substantiallythe same as that shown in Figs. 1 to 5, with the exception that it isadjustable. For this purpose, short sections 30, of angle bars or otherstructural bars are secured to the sills 10, by means of brackets 31,the lower arms of which are slotted longitudinally, as shown in Fig. 9,to permit adjustment thereof. The lower ends 32, of the uprights and thesections 30, are provided with apertures spaced uniform distances apart,which are adapted to register and bolts 33, rigidly secure the uprightsto the lower sections. The upper ends 34, of the uprights, and thevertical sections 35, are provided with apertures spaced suitabledistances apart, adapting the brace members 20 for adjustment to thedesired position. The I beam member 12, is vertically adjustable and issecured in place by bolts. Y By this construction the crane can beadjusted as to height adapting it for use in buildings in which thedistance from floor to floor varies. This is important and permits thesame crane being used under many different conditions and adapts thecrane being adjusted so as not to interfere with other work.

Rigidly connecting the upper ends of the front and rear legs 1 and 2,are metallic straps or bars 13, which are bolted to the legs and arebent downwardly to said Ibeam between said legs and rigidly clampedthereto by means of a saddle strap 14, which engages thereover and theends of which project below the I beam and journaled between which belowthe I beam is a sheave 15. Corresponding straps 16 and 17, are engagedover the opposite ends of said I beam and journaled on the lower ends ofeach are sheaves 18 and 19. Transverse brace bars 20, are rigidlysecured at the upper ends of each of said legs and extend downwardly andare bolted to the legs at the opposite end of the frame andapproximately opposite the brace bars 8 and 9, as shown in Figs. 1 and2, and rigidly secure said end frame members in unvarying relation witheach other and positively support the crane arm afforded by the I beam12.

A winch of any suitable type is secured to the sill and cross bar 3, onthe legs 1. Said winch may be of any suitable kind or character. Asshown, however, parallel uprights 22, are bolted or riveted to the crossbar 3, and sill 10, and journaled thereon is the winch drum 23, securedto which is a gear wheel 24, and as shown, the shaft or gudgeon 25, forsaid drum projects beyond one of said frame members 22, and may beengaged by a suitablecrank for rotating the drum when considerable speedof rotation is required.

gagement by a winch crank. A pinion 28, is

provided on the winch shaft which meshes with said gear and secured onsaid frame above the winch shaft is a gravity pawl 29,

which normally engages the gear 24, to hold the same from reverserotation when supporting its load.

Means are provided for permitting the shaft 26, to slide longitudinallyin the bearings 41, and for locking the shaft in the desired position.As shown, an arm 42, is hinged to the frame and is provided with ahooked end 43, which is adapted to engage shaft 26, and a collar 44, onsaid shaft bears against the hook 43, and locks the shaft from slidingmovement. When it is desired to adjust the pinion 28, out of mesh withgear 24, the hook 43, is swung from the shaft and the shaft shifteduntil the collar 44, is on the opposite side of the arm 42, when the armis returned to normal and locks the shaft from sliding with the pinionand gear out of mesh.

The operation is as follows: The hoisting line or cable 40, is servedover the sheaves 15 and 18, and to the drum 23, while hoistingintermediate beams and girders and other materials and is provided withany suitable timber hooks, slings or other means 29, for engaging timberor other weight to be supported, the crane being positioned intermediatethe posts or supports upon which the timber is to be laid and by meansof the winch the load is hoisted or swung into place. The clearancebetween the sheave and the floor is, of course, sufficient to permit thebeam or girder to be hoisted to full height. Having placed its load, themachine is pushed on to the next position where the operation isrepeated until the girder or beam for one of the side or end walls isreached. Vhen this occurs, the line is passed also through the sheave19, and the machine adjusted to bring the end of the crane arm 12, overthe desired position. In this position the beam or girder is hoistedinto place without difficulty and the machine immediately wheeled to thenext position where its use is required obviating all delay.

Owing to the present construction, the machine is obviouslyself-supporting. Guy lines of any kind are not required, and, owing tothe construction described, enormous strength with comparatively lightweight is afforded, thus enabling the device to be readily handled by acomparatively small raising crew.

Inasmuch as the end frames are connected at their tops by means of the Ibeam and braces before described which are connected therewith by meansof bolts, as shown in Figs. 1 and 2, the machine may be very quicklyknocked down for shipment or transportation, should it be desired, andwhen so knocked down, occupies but very small space and may as quicklybe re-assemblcd upon the job. This will readily be seen by reference toFigs. 1 and 2, in which, as shown, the braces 13 and 20, are connectedat the top of each leg by means of a single bolt 29, and as shown, thelegs are connected with the I beam arm only by means of one or morebolts 30, for each pair of legs. It thus follows that the removal of six(6) bolts suffices to permit the knocking down of the structure invwhich event the side braces still connected at one end with the legs,fold alongside the same.

Of course, various details of the construction may be varied. Inasmuch,however, as l. have shown but one (and that the preferred) form of theinvention, I do not purpose limiting this application for patentotherwise than necessitated by the prior art, as numerous details of theconstruction may be varied without departing from the principles of theinvention.

I claim as my invention:

1. A hoisting device embracing pairs of inclined end members affordingan unobstructed space at their sides therebetween, a truck supportingeach pair of end members, braces rigidly connecting the sets of membersat the top thereof, a winch supported on one pair of end members at thebottom thereof, a crane arm secured between the upper ids of the pairsof members, and affording a part of the connection between the endmembers and projecting beyond the same and sheaves secured on the cranearm.

2. A hoisting device embracing two frames inclined toward each other atthe top, braces rigidly connecting the frames at the top only, ahorizontal hoisting beam rigidly engaged between the frames at the topthereof, sheaves on said hoisting beam and a winch secured on one of theframes.

3. A crane comprising parallel sills, truck wheels j ournaled thereto,frame members secured to the sills and inclining inwardly and saidframes terminating at the upper ends in parallel portions, a crane armsecured to the parallel portions and extending outwardly from the frameand braces connecting the frame members at the upper ends.

at. A hoisting device embracing two frames inclined toward each other atthe top, braces rigidly connecting the frames at the top only, ahorizontal hoisting beam rigidly engaged between the frames at the topthereof, sheaves on said hoisting beam, a winch secured on one of theframes, and an individual truck supporting each frame.

5. A hoisting device embracing frames inclined toward each other andhaving the upper ends approximately parallel, braces rigidly connectingthe frames at the top, a horizontal hoisting beam secured between theparallel ends of the frames and projecting laterally beyond the frames,sheaves on the extremities of the hoisting beam, a sheave secured to thehoisting beam intermediate the frames and a winch secured to one of theframes.

6. A hoisting device embracing frames inclined toward each other andhaving the upper ends approximately parallel, braces rigidly connectingthe frames at the top, a horizontal hoisting beam secured between theparallel ends of the frames and projecting laterally beyond the frames,sheaves on the extremities of the hoisting beam, a sheave secured to thehoisting beam intermediate the frames, at winch secured to one of theframes, a sill secured to the bottom of each frame and wheels journaledto each sill.

7. A knock down hoisting device embraoing two frames inclined towardeach other, a horizontal hoisting beam secured to each at the topthereof and projecting beyond the frames, diagonal braces connecting thetops of the frames and a winch on one of said frames.

8. A hoisting device embracing a structural steel tower, comprisingframes, end members supporting the frames and the tower having opensides, baces connecting the frames at the top thereof, a hoisting beamalso connecting said frames at the top and projecting beyond one of thesame, sheaves on said hoisting beam, one between the frames and anotherat each extremity of the beam and a winch 011 one of the frames adaptedto receive a line served over the sheaves on the hoisting beam.

9. A knock down hoisting device embracing two longitudinally adjustableframes inclined toward each other, a horizontal hoisting beam adjustablysecured to the frames at the top thereof and projecting beyond one ofthe frames, braces connecting the top of the frames, and a winch on oneof said frames.

10. A crane comprising parallel independent trucks, sections rigidlysecured to each truck, upper sections adjustably secured to saidsections, adjustable braces connecting the upper sect-ions at the upperends, and a hoisting beam adjust-ably secured to the upper ends of theupper sections.

11. A crane comprising parallel trucks, two sections secured to eachtruck and pro vided with apertures, uprights each apertured at the lowerand upper ends, bolts extending through the lower apertures in theuprights and in the apertures in the sections to adjustably secure theuprights to said sections, brace bars connecting the uprights, ahoisting beam, bolts extending through the apertures in the upper endsof the uprights and through the beam to rigidly clamp the hoisting beamin place and said hoisting beam being vertically adjustable.

12. An adjustable hoisting device embracing frames inclined toward eachother at the top, braces rigidly connecting the frames at the top, ahorizontal hoisting beam rigidly engaged between the frames, sheaves onsaid hoisting beam and a winch secured on one of the frames.

13. An adjustable, knock-down hoisting device embracing frames inclinedtoward each other, a horizontal hoisting beam secured to each at the topthereof and project ing beyond the frames, diagonal braces connectingthe tops of the frames, at sill supporting each frame and trucks rigidlysecured to the sills adapted to permit the device to be moved as upon afloor.

14L. A hoisting device embracing longitudinally adjustable framesinclined toward each other, a hoisting beam adjustably secured to theframes, braces connecting the top of the frames, a sill supporting eachframe, trucks secured to each sill, and a winch on one of the frames.

15. A hoisting device embracing adjust- CHARLES H. STRESENREUTER.

W'itnesses 'WM. P. OGRADY,

FRANK M. STRESENREUTER.

